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V5197A FIRING RATE GAS VALVE
ML7999
1
HUB
SCREWS
1
V5197
1
ML7999 MUST BE MOUNTED PARALLEL WITH MOUNTING BRACKET.
Fig. 18. Mounting the ML7999 Actuator
on the V5197 Valve.
CHECKOUT AND OPERATION
Checkout
WARNING
Explosion Hazard and Electrical Shock Hazard.
Can cause explosion, serious injury or death.
1. Do not allow fuel to accumulate in the combustion
chamber for longer than a few seconds without
igniting. An explosive mixture can result.
2. Do not put the system into service until you have
satisfactorily completed the following Valve Leak
Test, all applicable tests described in the Checkout
section of the instructions for the flame safeguard
control, and any other tests required by the burner
manufacturer.
3. All tests must be performed by a trained,
experienced flame safeguard control technician.
4. Close all manual fuel shutoff valves as soon as
trouble occurs.
After the installation is completed, cycle the valve several
times with the manual fuel shutoff cock closed. Make sure the
valve and actuator function properly. Also perform the Valve
Leak Test before putting the valve into service.
Valve Leak Test
This is a test for checking the leakage tightness of the firing
rate gas valve only. It should be performed only by trained,
experienced flame safeguard control technicians during the
initial startup of the burner system, or whenever the valve is
Automation and Control Solutions
Honeywell International Inc.
Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North
35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario
M1V 4Z9
65-0247—2
G.R. Rev. 06-03
replaced (see Service Information section). It is recommended
that this test also be included in the scheduled inspection and
maintenance procedures.
NOTE: Additional leakage and closure tests may be required
ANTI-ROTATION
BOLT AND LOCKING
1. Close the downstream manual gas valve(s).
NUT (NOT SUPPLIED)
2. Energize the valve train to apply gas pressure.
ML7999
MOUNTING
3. Test with rich soap and water solution to make sure
BRACKET
4. Restore the system to normal operation.
M17683
Operation
A V5197A Firing Rate Gas Valve is operated by an actuator.
The valve opens counterclockwise
clockwise
off the gas flow and has no safety shutoff function. For further
information, refer to the actuator instructions.
Make sure that the actuator does not force the V5197 Valve
beyond the limits of the valve stroke (90 degrees). This can
damage or destroy the valve position indicator setscrew.
SERVICE INFORMATION
IMPORTANT
Scheduled Inspection and Maintenance
Set up and follow a schedule for periodic inspection and
maintenance for the burner, all other controls and the valves.
It is recommended that the valve leak test in the Operation
and Checkout section be included in this schedule. Refer to
the instructions for the primary safety control and safety
shutoff valve(s) for more information.
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
for other gas train components (for example, safety
shutoff valves [SSOV]).
there is no leak at any pipe adapter/valve mating
surfaces.
. When closed, the valve does not totally seal
WARNING
Explosion Hazard and Electrical Shock Hazard.
Can cause explosion, serious injury or death.
1. Turn off the gas supply and disconnect all electrical
power to the valve actuator before servicing.
2. Properly position and seat the seals in ends of the
valve body to prevent a hazardous gas leak.
Read these instructions and form 66-1099 carefully
for servicing information.
Only trained, experienced flame safeguard control
technicians should attempt to service or repair flame
safeguard controls and burner assemblies.
and closes
www.honeywell.com
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